Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results

Contrast ratio 108:1
Monitor model
Submitted 10 May 2019 14:36 CEST, by 84.236.*.*
Camera model HUAWEI FRD-L09
Processing remarks

Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 9.17256e+06 cd/m2
Luminance spread 5.01791e+06 cd/m2 (2 standard deviations)
Exposure value –6.5 stops   (aim for –2 to –3)
Exposure spread 0.81 stops
Area used for calculation 0.635 x 0.269
Camera settings Exposure time: 1/99996336   ISO: 500   F-number: 2.2
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: -2
White
Screen photo
[open image]
Luminance 9.91625e+08 cd/m2
Luminance spread 4.98257e+08 cd/m2 (2 standard deviations)
Exposure value –2.7 stops   (aim for –2 to –3)
Exposure spread 0.74 stops
Area used for calculation 0.635 x 0.269
Camera settings Exposure time: 1/99996336   ISO: 64   F-number: 2.2
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: -1.2

The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.